Diagnostics - Remote Air Cooled
No Ice
Problem
Likely Cause
Probable Solution
No power to unit
Power disconnected
Check breaker or fuse. Reset
or replace, restart and check
No power to controller
Transformer open
Replace transformer
Shut down on max.
water fill time
Water shut off
Restore water supply
Shut down on
maximum freeze time
Water leak
Check purge valve, curtain,
sump, pump hose
Dirty condenser
Clean condenser
Restricted location, intake air
too hot
Have condenser moved
Ice thickness sensor dirty or
disconnected
Check ice thickness sensor
probe
Water distributor dirty
Remove and clean water
distributor
Inlet water valve leaks through
during freeze
Check inlet water valve
Connected to hot water
Check for bleed thru from /
missing check valve in building
water supply
Incomplete harvest
Check harvest system
High pressure cut out opened
Check check fan motor
Check quick connects for
complete piercing
Fan motor not turning
Check fan motor, check fan
blade
Water pump not pumping
Check pump motor, check
controller using test mode
Pump hose disconnected
Check hose
Liquid line valve does not open
Check coil of valve, check
controller using test mode.
Compressor not operating
Check compressor contactor,
check controller using test
mode
September 2006 Page 52